So I've been thinking of doing a LAN co-op playthrough of Unreal Gold. But given how long the campaign is, I had a question...

Is it possible to save during a co-op playthrough? I've done some research- with most saying that it is possible to save the server's status or something like that... So is it a simple matter- or does it require mods?

Where did you get the coop-mode from? Is it a mod?

No it not MOD. This indeed own coop mode. I remember play coop save with my friend in the LAN. I fairly remember it work but I think coop save is big problem because of SYNC